8 Gas Detection


Adapting to the new normal: GASG’s successful gas detection and analysis hybrid meetings and plans for the future


Over the past 12 months, the Gas Analysis and Sensing Group has made signifi cant steps towards reinstating its pre-pandemic face-to-face approach to meetings, whilst continuing to enhance the remote access opportunities for members where preferred.


In December 2021, recognising the ongoing concerns over the risks from Covid, the 81st Colloquium was held on-line, continuing the approach used during the height of the pandemic. The topic was ‘Following the Science? - Exposure Limits, Toxicology and Human Health’. The programme featured a number of experts in the fi eld who covered issues including occupational exposure limits, recent research in urban air quality and the impact of pollutants on cognition and respiratory health.


The usual post-talk Q and A sessions were moderated through the meeting tools whilst additional online breakout rooms allowed direct interaction with speakers. One advantage of using remote capabilities is the opportunity to include speakers who would be unable to attend in normal circumstances. On this occasion, for example, Professor Mike Jerrett (University of California, Los Angeles) described the latest work on the relevance and toxicity of tyre and brake particle emissions.


GASG Chair, Dr Jane Hodgkinson commented “When the pandemic fi rst hit, we tried hard to replicate the in-person experience as far as possible with our online meetings. We were very fortunate in having our own administrators who were able to provide a high level of back-offi ce support for this switch, sometimes at short notice. We established breakout rooms for informal chats during which many of us got to see each other’s workplaces, including one excellent shed that has now become famous within GASG! We had a minimum of online rules, the idea being that the experience was similar to a real meeting where people would conduct themselves just as appropriately. And it worked, right down to those occasions which raise a smile - like a phone going off at an embarrassing moment!”


In June, the improving Covid situation permitted the resumption of in-person attendance, and a parallel online capability enabled the group’s fi rst hybrid meeting (the 82nd Colloquium) to be held on the subject of ‘Optical & Acoustic Gas Detection - Making Waves’. The venue was the Royal Navy’s Historic Portsmouth dockyard and allowed a mix of in-person and remote attendees to communicate with speakers and each other, going some way toward replicating the traditional GASG experience. The location offered the additional benefi t of opportunities to visit a number of the fascinating exhibits such as the Mary Rose, HMS Victory and HMS Warrior!


It has long been the tradition of GASG to seek to cover the widest possible range of gas analysis applications. On this occasion, Professor Amaury Triaud, (University of Birmingham) provided a fascinating overview of the applications of spectroscopy to exoplanets and their atmospheres. The rapid advances in this new fi eld were explained and (as hinted in the presentation!) were subsequently reinforced by the public announcement of early results from the James Webb Space telescope just a few days later.


Building on the experience gained from this event, further enhancements to the on-line experience were identifi ed and successfully implemented in the most recent hybrid meeting held at the start of December at City, University of London. GASG’s 83rd Colloquium, ‘The Great Escape - Detecting and Measuring Gas Leaks’ provided a comprehensive overview of this topic which is of growing relevance due to the impact of gas escapes upon anthropomorphic global warming. The meeting provided the opportunity to discuss the latest advances in sophisticated remote monitoring methods such as open path optical techniques. Several speakers also highlighted the urgent need to address methane emissions which are a potent driver of global warming - a fact which has sometimes been obscured by the focus on carbon dioxide. Again, the meeting was fortunate to have attracted experts from Europe, the US and the UK to provide timely, insightful and comprehensive information to the members on topics of relevance and interest. Dr Hodgkinson noted “Our meetings have always been a friendly place for the community to meet and share news. The event where it is worth the trip just for that chance 5-minute chat with somebody you wanted to get in touch with - or have never met before! So we are delighted to have face-to-face meetings in some excellent venues once again”


The fi rst event planned for 2023 is the 4th Early Career Forum and 84th Colloquium, due to take place in person at Chicheley Hall, near Milton Keynes (UK), on 23rd March 2023. Previous GASG Early Career events have been very popular and well-received and this is a fantastic opportunity for early career staff and students to present their work and network with others in the fi eld. The Gas Analysis and Sensing Group has a great strength in bringing together people in the fi eld across multiple sectors including sensor, instrument and component manufacturers, end users, R&D, academics and consultants. This provides a reach into the “real world” that few other organisations can match, and the Early Career Forum is an excellent way to broaden the attendees’ horizons.


Applications for talks or poster presentations are currently being accepted. For information contact us at admin@gasg.info. The submission requirements are not onerous - no written paper is required, just a short abstract and tweet (which will be shared via the GASG account on the day). Where possible, GASG would seek to publish the slides or poster on the members’ section of their website after the event (with permission, and redacted if necessary), providing further useful exposure for early career workers. GASG are looking for presentations concerning:


• New sensors, instruments, components, analytical methods, modelling and results. • Detection and measurement of gases, volatile species and particles. • Policy, practice and legislation issues.


• Applications including environmental monitoring, industrial safety, security, food and agriculture, healthcare, transport, manufacturing and any other related topics.


Looking further ahead, GASG intends to deliver more meetings featuring renowned experts in the fi eld covering the latest developments in gas detection around the world. These events will also provide further opportunities to meet and discuss shared interests in gas analysis and sensing with those from academia, business, institutes and other organisations.


More information online: ilmt.co/PL/06Rn For More Info, email:


email:


IET JANUARY / FEBRUARY 2023 For More Info, email:


For More Info, email: email:


59540pr@reply-direct.com email:


TBM and THT are the most commonly used odorants to make odourless natural gas smell, so that people realise there is a gas leak. However, control of these odorants is necessary to maintain their effectiveness. Only last year, Sensorix offered its electrochemical (EC) gas sensors for mercaptan and THT detection - Sensorix TBM 50 and Sensorix THT 100.


But due to various power to gas initiatives, more and more H2 will be added to


natural gas. For this reason, a gas measurement device with high-performance gas sensors and no H2


interference is required. We are very pleased to confi rm


that the Sensorix TBM 50 is already suited for this application. To complete our respective range of sensors, we have developed the Sensorix THT 100 low H2


,


so we now offer a perfect solution for the detection of mercaptans and THT in natural gas with added H2


.


The Sensorix TBM 50 detects mercaptans with zero cross sensitivity towards H2


, CO, H2 S, THT and is ready for use in H2 containing natural gas (“power to


gas”). The Sensorix TBM 50 gas sensor has excellent repeatability (standard deviation of sensitivity = 0.5 % for 10 consecutive measurements at 10 mg/ m³ TBM). It also shows excellent baseline stability from -10 to 40°C and in changing humidity (<0.1 mg/m³) and its unbiased operation will increase battery life in your portable instrument.


The 3-electrode sensor, Sensorix THT 100 low H2 applications because it has a very low H2 in 20% hydrogen), has no H2


m3 is suitable for power-to-gas interference (THT signal only 1 mg/ S cross interference and it requires 300 mV bias.


All sensors are available in various standard formats - 4S, 7S, Mini, Classic, Smart, as well as in customer specifi c mechanical adaptations.


More information online: ilmt.co/PL/R201 and ilmt.co/PL/Y0YY For More Info, email:


58263pr@reply-direct.com email:


A sensor to measure arsine gas in the ppb range


For More Info, email: email:


How can we help identifying natural gas leaks when H2 is added?


With the AsH3/C-1 and the AsH3/M-1 MEMBRAPOR presents two extremely highly sensitive sensors, which allow the highly toxic gas arsine to be measured in the ppb range.


Despite its past as a component in chemical weapons, Arsine is now a common technical product in the semiconductor industry. Arsine is used as a doping gas on a large scale and in signifi cant quantities in the context of thermal doping of silicon in the diffusion process and in ion implantation. To ensure safety, all processes need to be controlled and monitored with electrochemical Arsine sensors.


More information online: ilmt.co/PL/AyDj For More Info, email:


57423pr@reply-direct.com


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44